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Cheap flights from Incheon Intl Airport to Illinois from $465

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Incheon Intl Airport to Illinois departing on 8/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Incheon Intl Airport to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
5:45 pm - 2:48 pm
ICN
-
ORD
35h 03m
1 stop
Air Canada Logo
9:30 pm - 4:05 pm
ORD
-
ICN
28h 35m
2 stops
$814Air Canada
Mon, Sep 14 - Thu, Sep 24
Air Canada Logo
5:45 pm - 2:48 pm
ICN
-
ORD
35h 03m
1 stop
Air Canada Logo
7:45 pm - 4:05 pm
ORD
-
ICN
30h 20m
1 stop
$824Air Canada
Thu, Sep 17 - Wed, Sep 30
Air Canada Logo
5:45 pm - 2:48 pm
ICN
-
ORD
35h 03m
1 stop
Air Canada Logo
3:40 pm - 4:05 pm
ORD
-
ICN
34h 25m
1 stop
$825Air Canada
Thu, Sep 17 - Wed, Sep 30
United Airlines Logo
4:50 pm - 12:14 am
ICN
-
MLI
21h 24m
2 stops
United Airlines Logo
6:50 pm - 3:20 pm
MLI
-
ICN
30h 30m
2 stops
$920United Airlines
Wed, Sep 9 - Sun, Sep 13
United Airlines Logo
11:30 am - 9:04 pm
ICN
-
MLI
23h 34m
2 stops
United Airlines Logo
3:44 pm - 4:20 am
MLI
-
ICN
22h 36m
2 stops
$925United Airlines
Wed, Sep 9 - Sun, Sep 13
Delta Logo
7:20 pm - 12:30 am
ICN
-
STL
19h 10m
1 stop
Delta Logo
1:22 pm - 4:00 am
STL
-
ICN
24h 38m
1 stop
$990Delta
Thu, May 14 - Thu, Jul 30
Alaska Airlines Logo
7:35 pm - 11:59 pm
ICN
-
STL
18h 24m
1 stop
Alaska Airlines Logo
7:00 am - 5:30 pm
STL
-
ICN
20h 30m
1 stop
$1,041Alaska Airlines
Sat, Apr 25 - Wed, Apr 29
Delta Logo
4:40 pm - 12:30 am
ICN
-
STL
21h 50m
2 stops
Delta Logo
6:58 pm - 4:00 am
STL
-
ICN
19h 02m
1 stop
$1,056Delta
Thu, May 14 - Thu, Jul 30
Alaska Airlines Logo
7:35 pm - 11:59 pm
ICN
-
STL
18h 24m
1 stop
Alaska Airlines Logo
7:00 am - 5:30 pm
STL
-
ICN
20h 30m
1 stop
$1,131Alaska Airlines
Sat, Apr 25 - Thu, Apr 30
Korean Air Logo
7:20 pm - 12:25 am
ICN
-
STL
19h 05m
1 stop
Korean Air Logo
9:26 am - 5:20 pm
STL
-
ICN
17h 54m
1 stop
$1,224Korean Air
Mon, Apr 13 - Sun, Apr 19

Air Canada flights from Incheon Intl Airport to Illinois

Our best Air Canada deals on Incheon Intl Airport to Illinois flight tickets
Air Canada
Sep 14
ICN5:45 pmIncheon Intl
35h 03m
1 stop
ORD2:48 pmChicago O'Hare Intl
Sep 24
ORD9:30 pmChicago O'Hare Intl
28h 35m
2 stops
ICN4:05 pmIncheon Intl
$814
Air Canada
Sep 17
ICN5:45 pmIncheon Intl
35h 03m
1 stop
ORD2:48 pmChicago O'Hare Intl
Sep 30
ORD7:45 pmChicago O'Hare Intl
30h 20m
1 stop
ICN4:05 pmIncheon Intl
$824
Air Canada
Sep 17
ICN5:45 pmIncheon Intl
35h 03m
1 stop
ORD2:48 pmChicago O'Hare Intl
Sep 30
ORD3:40 pmChicago O'Hare Intl
34h 25m
1 stop
ICN4:05 pmIncheon Intl
$825

United Airlines flights from Incheon Intl Airport to Illinois

Our best United Airlines deals on Incheon Intl Airport to Illinois flight tickets
United Airlines
Sep 9
ICN4:50 pmIncheon Intl
21h 24m
2 stops
MLI12:14 amMoline Quad-City
Sep 13
MLI6:50 pmMoline Quad-City
30h 30m
2 stops
ICN3:20 pmIncheon Intl
$920
United Airlines
Sep 9
ICN11:30 amIncheon Intl
23h 34m
2 stops
MLI9:04 pmMoline Quad-City
Sep 13
MLI3:44 pmMoline Quad-City
22h 36m
2 stops
ICN4:20 amIncheon Intl
$925
United Airlines
Apr 16
ICN4:50 pmIncheon Intl
22h 09m
1 stop
ORD12:59 amChicago O'Hare Intl
Apr 29
ORD3:45 pmChicago O'Hare Intl
22h 35m
1 stop
ICN4:20 amIncheon Intl
$1,105

momondo Fare Finder

 
Customize your flight search to find flights from Incheon Intl Airport to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated April 2, 2026.
Use the filters below to find and compare flights from Incheon Intl Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Mon 9/14

5:45 pm-2:48 pm

1 stop35h 03m

Chicago O'Hare Intl

Thu 9/24

9:30 pm-4:05 pm

2 stops28h 35m

$814

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Thu 9/17

5:45 pm-2:48 pm

1 stop35h 03m

Chicago O'Hare Intl

Wed 9/30

7:45 pm-4:05 pm

1 stop30h 20m

$824

IncheonChicago

ICN - ORD

ICNORD

Incheon Intl

Thu 9/17

5:45 pm-2:48 pm

1 stop35h 03m

Chicago O'Hare Intl

Wed 9/30

3:40 pm-4:05 pm

1 stop34h 25m

$825

IncheonMoline

ICN - MLI

ICNMLI

Incheon Intl

Wed 9/9

4:50 pm-12:14 am

2 stops21h 24m

Moline Quad-City

Sun 9/13

6:50 pm-3:20 pm

2 stops30h 30m

$920

IncheonMoline

ICN - MLI

ICNMLI

Incheon Intl

Wed 9/9

11:30 am-9:04 pm

2 stops23h 34m

Moline Quad-City

Sun 9/13

3:44 pm-4:20 am

2 stops22h 36m

$925

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 5/14

7:20 pm-12:30 am

1 stop19h 10m

Lambert-St Louis

Thu 7/30

1:22 pm-4:00 am

1 stop24h 38m

$990

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sat 4/25

7:35 pm-11:59 pm

1 stop18h 24m

Lambert-St Louis

Wed 4/29

7:00 am-5:30 pm

1 stop20h 30m

$1,041

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 5/14

4:40 pm-12:30 am

2 stops21h 50m

Lambert-St Louis

Thu 7/30

6:58 pm-4:00 am

1 stop19h 02m

$1,056

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sat 4/25

7:35 pm-11:59 pm

1 stop18h 24m

Lambert-St Louis

Thu 4/30

7:00 am-5:30 pm

1 stop20h 30m

$1,131
Quickest round-trip

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 4/13

7:20 pm-12:25 am

1 stop19h 05m

Lambert-St Louis

Sun 4/19

9:26 am-5:20 pm

1 stop17h 54m

$1,224

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Incheon Intl Airport to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Incheon Intl Airport to Illinois is on a Tuesday when prices can be found for as low as $1,320. Flights from Incheon Intl Airport to Illinois on a Friday will generally be more expensive and average around $1,598. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest Incheon Intl to Illinois flight route?

Fly from Incheon Intl to Chicago O'Hare Intl for the best Incheon Intl - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Incheon Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $1,205 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Incheon Intl Airport for as low as $816 on momondo.

What cabin class options are available on Incheon Intl to Illinois flights?

There are 4 cabin classes available to choose from on Incheon Intl to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Incheon Intl Airport to Illinois flights?

No. A direct flight is the cheapest option for a flight between Incheon Intl Airport to Illinois.

Cheap Incheon Intl Airport to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Incheon Intl Airport to Illinois

Best Price Found

$1,077

Fastest flight time

12h 50m

Direct flights

Every day

Airports in Illinois

98 airports
The best one-way flight to Illinois from Incheon Intl Airport in the past 72 hours is $1,077. The best round-trip flight deal from Incheon Intl Airport to Illinois found on momondo in the last 72 hours is $1,260.
The fastest flight from Incheon Intl Airport to Illinois takes 12h 50m
Direct flights go from Incheon Intl Airport to Illinois every day.
There are 98 airports in Illinois. From Incheon Intl Airport there are direct flights to Chicago O'Hare Intl (ORD).
Search flight deals

Frequently asked questions about flying from Incheon Intl Airport to Illinois

  • When did momondo last update prices for flights from Incheon Intl Airport to Illinois?

    Prices for flights from Incheon Intl Airport to Illinois are refreshed on a daily basis.

  • How many operators does momondo search for flights from Incheon Intl Airport to Illinois?

  • How old do you have to be to fly from Incheon Intl Airport to Illinois?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Incheon Intl Airport to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Incheon Intl Airport to Illinois?

Best airlines flying from Incheon Intl Airport to Illinois

Compare and see reviews for airlines that fly from Incheon Intl Airport to Illinois with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $197Free CancellationRating
7.9
12,154 reviews
Search Alaska Airlines flights
DeltaPriceFrom $229Free CancellationRating
7.9
8,372 reviews
Search Delta flights
Asiana AirlinesPriceFrom $558Free CancellationRating
8.1
509 reviews
Search Asiana Airlines flights
United AirlinesPriceFrom $586Free CancellationRating
7.4
9,535 reviews
Search United Airlines flights
Air CanadaPriceFrom $635Free CancellationRating
7.1
10,884 reviews
Search Air Canada flights
Korean AirPriceFrom $687Free CancellationRating
8.4
1,203 reviews
Search Korean Air flights

Why use momondo?

Why should I use momondo to find a flight deal from Seoul to Illinois?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seoul to Illinois. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seoul to Illinois with flexible booking policies on momondo?

momondo does allow users to show only those flights to Illinois from Seoul which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seoul to Illinois?

Once all potential Seoul to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Seoul to Illinois right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Illinois from Seoul. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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